The temperature on October 20, 1917 was between 3.1 °C and 14.6 °C and averaged 7.6 °C. There was 5.6 hours of sunshine (54%). The average windspeed was 2 Bft (weak wind) and was prevailing from the south. Source: KNMI
In The Netherlands , there was from August 29, 1913 to September 9, 1918 the cabinet Cort van der Linden, with Mr. P.W.A. Cort van der Linden (liberaal) as prime minister.
March 2 » The enactment of the Jones–Shafroth Act grants Puerto Ricans United States citizenship.
May 21 » The Imperial War Graves Commission is established through royal charter to mark, record, and maintain the graves and places of commemoration of the British Empire's military forces.
July 20 » World War I: The Corfu Declaration, which leads to the creation of the post-war Kingdom of Yugoslavia, is signed by the Yugoslav Committee and Kingdom of Serbia.
September 26 » World War I: The Battle of Polygon Wood begins.
October 26 » First World War: Brazil declares war on the Central Powers.
November 7 » World War I: Third Battle of Gaza ends: British forces capture Gaza from the Ottoman Empire.
Day of death June 13, 1918
The temperature on June 13, 1918 was between 8.0 °C and 19.2 °C and averaged 14.5 °C. There was 4.1 hours of sunshine (25%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west. Source: KNMI
In The Netherlands , there was from August 29, 1913 to September 9, 1918 the cabinet Cort van der Linden, with Mr. P.W.A. Cort van der Linden (liberaal) as prime minister.
In The Netherlands , there was from September 9, 1918 to September 18, 1922 the cabinet Ruys de Beerenbrouck I, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
January 25 » The Ukrainian People's Republic declares independence from Soviet Russia.
March 3 » Russia signs the Treaty of Brest-Litovsk, agreeing to withdraw from World War I, and conceding German control of the Baltic States, Belarus and Ukraine. It also conceded Turkish control of Ardahan, Kars and Batumi.
June 22 » The Hammond Circus Train Wreck kills 86 and injures 127 near Hammond, Indiana.
November 12 » Austria becomes a republic. After the proclamation, a coup attempt by the communist Red Guard is defeated by the social-democratic Volkswehr.
November 27 » The Free Territory of Ukraine is established in Huliaipole.
December 1 » Iceland becomes a sovereign state, yet remains a part of the Danish kingdom.
When copying data from this family tree, please include a reference to the origin: Eva Drenth, "Family tree Diverse", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-drenth/I19240.php : accessed February 17, 2026), "Siepko Groen (1917-1918)".
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